How were Bob Marvel's Guns marked in the 80s?

Looking at a couple of paper punchers.  Unlike the more recent products these things have "Bob Marvel"  marked on the slides in block letters.   The guns are as new and look well put together.   They have the original skinny tang safety so I'm thinking that they are builds from the 80s.

Bob would build what you wanted: rebuild, new from scratch, etc. I've seen slides marked with his name and the right side dust cover on frame. I've seen many of his pistols over the years and they are all different.
Jon

Thanks Jon...  Just about what I figured.  These guns are a mix of Colt and Caspian slides and Caspian frames.  Kart and Colt NM barrels.  Good looking guns.